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When Your Brain Becomes a Heated Meeting: Review of 脳内ポイズンベリー (Poison Berry in the Brain)

A creative Japanese film that takes you inside the brain of a 30-year-old single woman, where five characters debate every decision in love. Fun, funny, and touching all at once.

A
25 Jun 2026 · 4 นาทีอ่าน
👁 52
Poison Berry in my Brain
Poison Berry in my Brain
脳内ポイズンベリー
📅 2015 🕒 121 นาที 🎬 Comedy, Romance
7.0
/ 10
คะแนนจาก TMDB

Have you ever wondered how the voices in your head work when you make decisions in love? The Japanese film Poison Berry in the Brain (Japanese title: 脳内ポイズンベリー) personifies those thoughts through a chaotic meeting of five personalities in the brain of a 30-year-old single woman who falls for a younger man. The film blends comedy, romance, and psychological insight seamlessly.

Plot Summary (No Spoilers)

Ichiko Sakurai (played by Yoko Maki) is a 30-year-old woman who is unemployed and single. One day, she meets Ryoichi Saotome (Yuki Furukawa), a younger man at a bar, and despite the age gap, she can't forget him. Inside Ichiko's brain, five characters control her actions: Yoshida, the chairman (Hidetoshi Nishijima); Ishibashi, the optimist (Ryunosuke Kamiki); Ikeda, the pessimist (Yoh Yoshida); Hatoko, who lives by instinct; and Kishi, who dwells on the past (played by two other actors). These five characters hold fierce meetings every time Ichiko must make a decision about love.

Acting and Characters

Yoko Maki naturally portrays Ichiko's confusion, while the cast playing the brain personalities are equally outstanding. Hidetoshi Nishijima as Yoshida, the stern and rational chairman; Ryunosuke Kamiki as Ishibashi, the optimistic and cheerful one; Yoh Yoshida as Ikeda, the suspicious and pessimistic one; along with Songha as Ochi or Hatoko? (the names vary slightly in the film) and another actor as Kishi, who reminisces about the past. The chemistry among the brain actors makes each meeting fun and colorful.

Direction, Cinematography, and Music

Director Yuichi Satoh turns a potentially complex concept into an easy-to-understand and enjoyable film through rapid editing and seamless transitions between the real world and the brain world. The brain meeting room is designed with vibrant colors, contrasting with the simple real world. The music enhances the humor and romance, especially during the brain characters' arguments.

Editorial Analysis

What makes Poison Berry in the Brain interesting is its concrete portrayal of psychological concepts like 'decision-making' and 'internal conflict.' The film not only tells a love story of a single woman but also reflects how people often have voices in their heads debating reason, emotion, fear, and hope. It also touches on age differences in love and the courage to open up despite internal obstacles. A plus is that the film doesn't drag and ends with a warm message.

Verdict

Poison Berry in the Brain is a unique and engaging romantic comedy, perfect for fans of creative Japanese films or anyone facing hesitation in love. It will make you smile and reflect on the voices in your own head.

Screenshots

Poison Berry in my Brain
Poison Berry in my Brain
Poison Berry in my Brain

👍 Pros

  • +Creative concept of simulating a brain meeting
  • +All actors perform well, especially the brain personality team
  • +Perfect blend of comedy and romance
  • +Provides insights about decision-making and love

👎 Cons

  • Some parts may feel chaotic and hard to follow
  • Real-world characters may be overshadowed by brain characters

Top Cast

FAQ

Not directly. The title metaphorically refers to toxic or conflicting thoughts in the heroine's brain.

No theatrical release in Thailand, but it can be watched via streaming or imported DVDs.

Yes, it is based on a manga of the same name by Yoshiie Gouda.

It leans towards funny and heartwarming, with a little drama. Overall, it's a feel-good film.

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